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feat(adr-0024): Phase 6 — comparative demo, three head-to-head conditions

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Closes the 6-phase ADR-0024 chain with a focused comparative demo
that distinguishes CORE (inner-loop + margin + typed refusals) from
the in-system boundary-only baseline (ADR-0023 ablation).

Three conditions, all passing under contract tests:

  C1. Replay determinism
        baseline: 8/8 stable across 5 reruns
        CORE:     8/8 stable across 5 reruns
        CORE additionally folds refusal_reason into trace hash so
        refusal events are replayable evidence.

  C2. Traced rejection
        baseline emits forbidden: 3/3 (admits=False but walk continues)
        CORE corrects-or-refuses:  3/3
        CORE rejection in trace:   3/3
        Demonstrates that inner-loop is causally responsible for the
        selection difference between baseline and CORE.

  C3. Coherent refusal
        baseline typed refusals:        0/3 (never raises typed refusal)
        baseline emits inadmissible:    3/3
        CORE typed refusals:            3/3 (all INNER_LOOP_EXHAUSTION)
        Demonstrates that typed refusal with rejected_attempts evidence
        is new in CORE, not present in boundary-only.

Why in-system baseline (not LLM):
  A transformer-LLM comparison would be non-deterministic by
  construction, could not be CI-enforced, and would be apples-to-
  oranges (different corpus / training / sampling).  The honest
  comparison is the ablation: same codebase with the Phase 2-5
  additions disabled.

Files:
  evals/forward_semantic_control/phase6_demo.py
  evals/forward_semantic_control/public/v2_phase6_demo/cases.jsonl   (8 cases)
  evals/forward_semantic_control/results/phase6_demo_report.json
  tests/test_phase6_demo.py                                          (17 passing)
  docs/evals/phase6_comparative_demo.md

Tests: 1085 passed, 2 skipped (+17 from Phase 5 baseline).

This closes the ADR-0024 6-phase chain:
  Phase 1 — pack-grounded fixture + architectural finding   (3940290)
  Phase 2 — typed refusals + trace fold                     (310793a)
  Phase 3 — ADR-0026 ranked-with-margin                     (639e107)
  Phase 4 — ADR-0025 rotor / frame admissibility            (542e13d)
  Phase 5 — stratified 5-family mechanism-isolation         (b664984)
  Phase 6 — comparative demo                                (this commit)
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# Phase 6 — Comparative Demo: CORE vs In-System Baseline
**Date:** 2026-05-17
**Corpus:** `evals/forward_semantic_control/public/v2_phase6_demo/cases.jsonl` (8 cases)
**Runner:** `evals/forward_semantic_control/phase6_demo.py`
**Report:** `evals/forward_semantic_control/results/phase6_demo_report.json`
**Contract tests:** `tests/test_phase6_demo.py` (17 passing)
## What this demo shows
Three head-to-head conditions where adding the Phase 2-5 mechanisms
(inner-loop admissibility, margin gate, typed refusals) produces
behavior that the in-system baseline (boundary-only, ADR-0023) cannot
produce. The "baseline" is **the same CORE codebase** with
`inner_loop_admissibility=False` — a true ablation, not a comparison
to a transformer LLM or any external system.
## Why the baseline is in-system
A transformer-LLM comparison would be:
1. Non-deterministic — directly violating CLAUDE.md's anti-stochastic
stance.
2. Unable to be CI-enforced — every run would produce different
outputs.
3. An apples-to-oranges comparison — the LLM has access to its
training corpus; CORE has access only to the curated pack.
The in-system ablation is the honest comparison because it isolates
*the contribution of the mechanism itself*, not the corpus, prompt,
or sampling differences.
## Headline
| metric | value |
|---|---|
| `all_three_conditions_pass` | **true** |
| C1 replay determinism (baseline) | **8/8** stable across 5 reruns |
| C1 replay determinism (CORE) | **8/8** stable across 5 reruns |
| C2 baseline emits forbidden | **3/3** |
| C2 baseline admits forbidden | **0/3** (inadmissibility is visible but ignored) |
| C2 CORE corrects-or-refuses | **3/3** |
| C2 CORE rejection in trace | **3/3** |
| C3 baseline typed refusals | **0/3** |
| C3 baseline emitted inadmissible | **3/3** |
| C3 CORE typed refusals | **3/3** with `RefusalReason.INNER_LOOP_EXHAUSTION` |
## Condition 1 — Replay determinism
Both baseline and CORE produce byte-identical
`hash_admissibility_trace(...)` outputs across 5 reruns on the same
case. This is *preserved*, not added, by Phase 2-5.
**What CORE adds on top:** the trace now also folds
`refusal_reason` into its payload when present (ADR-0024 Phase 2),
so a refusal event itself is replayable evidence, not just an
exception type at runtime.
This is the load-bearing precondition for everything that follows:
without determinism, "the rejection appeared in the trace" is not a
verifiable claim, just a probabilistic one.
## Condition 2 — Traced rejection
On three adversarial cases the boundary geometrically picks the
forbidden token (`meaning` / `reason` / `question`). Both legs see
the same field state, same vocabulary, same persona.
**Baseline behavior (ADR-0023):** boundary picks the forbidden
token. The admissibility verdict for that selection is
`admitted = False` — *the inadmissibility is visible in the trace*
but the walk emits the forbidden anyway. This is the "silent
emit" failure mode: the rejection is observable but not actionable.
**CORE behavior (ADR-0024 + ADR-0026):** inner-loop overrides
boundary, selects the blade-aligned expected token (or refuses on
sub-δ margin), and the forbidden token appears in
`rejected_attempts`. The rejection is now *causally responsible*
for the selection difference between baseline and CORE — not just
observable.
This is the falsifiable mechanism-isolation claim of ADR-0024.
## Condition 3 — Coherent refusal
On three no-admissible-path cases (all candidates score negative
under the chosen blade), the two configurations produce qualitatively
different outputs:
**Baseline:** never raises a typed refusal. Emits an inadmissible
candidate (`admitted = False`) or fails with an untyped `ValueError`.
The refusal — if it happens — carries no `RefusalReason` and no
`rejected_attempts` evidence.
**CORE:** raises `InnerLoopExhaustion` with
`reason = RefusalReason.INNER_LOOP_EXHAUSTION`, carrying the full
`rejected_attempts` list. The refusal is:
* **Typed** — callers can pattern-match on `RefusalReason`.
* **Replayable** — the reason is folded into the trace hash.
* **Evidenced** — `rejected_attempts` shows *which* candidates were
considered and what scores they received.
This is the "honest refusal" architectural commitment of CLAUDE.md
made concrete and CI-enforced.
## Three-condition compositionality
C1 + C2 + C3 together are the load-bearing claim: CORE is
1. deterministic (C1)
2. self-aware of bad selections (C2)
3. capable of refusing rather than emitting bad selections (C3)
Without C1, the other two are anecdotes. Without C2, C3 is
unfalsifiable (every refusal could be a hidden bug). Without C3,
C2's "rejection in trace" can still be ignored by the walk.
This is what distinguishes CORE from a wrapped LLM at the
mechanism level.
## Threats to validity (what this does NOT claim)
* **Not LLM benchmarking.** This demo does not compare CORE against
a transformer model on any natural-language benchmark. Doing so
would require accepting non-determinism and is out of scope.
* **Not a generality claim.** The corpus is 8 hand-curated cases
from the cognition pack, geometrically constructed to exercise
each condition. A larger natural corpus is exercised in Phase 5;
the Phase 6 corpus is intentionally focused for narrative clarity.
* **Not a performance claim.** CORE's inner-loop adds latency over
boundary-only (see Phase 2 corpus report). Phase 6 demonstrates
*capability* gain, not *throughput* parity.
* **Not a soundness proof.** C1's "byte-identical across 5 reruns"
is empirical determinism, not formal. Formal replay determinism
is the responsibility of the `trace_hash` contract in
`core/cognition/trace.py` and is exercised elsewhere.
## What this enables next
* A future "honest refusal in chat" PR can plumb
`InnerLoopExhaustion.reason` into `ChatResponse.refusal_reason` and
Phase 6's C3 contract will already enforce that the typed reason
is preserved end-to-end.
* A future replay-debug UI can render `rejected_attempts` per step,
and Phase 6's C2 contract guarantees that the data is there to
render.
* Phase 5's δ=0.4 falsifiability gate composes with C2 here: any
new corpus case that surfaces a margin below δ where margin-mode
refusal is *wrong* would simultaneously fail C2's
`core_corrects_or_refuses` predicate, surfacing the architectural
finding rather than silently being patched.
## Files
* `evals/forward_semantic_control/public/v2_phase6_demo/cases.jsonl` — 8 demo cases
* `evals/forward_semantic_control/phase6_demo.py` — comparative runner
* `evals/forward_semantic_control/results/phase6_demo_report.json` — full per-case report
* `tests/test_phase6_demo.py` — 17 contract tests (C1: 4, C2: 6, C3: 6, headline: 1)
* `docs/evals/phase6_comparative_demo.md` — this note
## Six-phase ADR-0024 chain — closing summary
| Phase | Deliverable | Status |
|---|---|---|
| 1 | Pack-grounded fixture rewrite + architectural finding | ✅ `3940290` |
| 2 | Typed refusals + trace fold + `RefusalReason` enum | ✅ `310793a` |
| 3 | ADR-0026 ranked-with-margin (δ=0.4) | ✅ `639e107` |
| 4 | ADR-0025 rotor / frame admissibility (sibling module) | ✅ `542e13d` |
| 5 | Stratified 5-family mechanism-isolation corpus + benign EXHAUSTION_CEILING corpus | ✅ `b664984` |
| 6 | Three-condition head-to-head demo (replay / traced rejection / coherent refusal) | ✅ this commit |
Total: 8 commits, ~58 contract tests added, 3 ADRs (0024 / 0025 / 0026)
moved to Accepted with implementation + characterization evidence.

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"""Phase 6 comparative demo — CORE vs in-system baseline.
Runs a focused demo corpus through two configurations and produces
side-by-side evidence for three head-to-head claims:
C1. Replay determinism
Both baseline and CORE produce byte-identical trace hashes
across N reruns on the same case. CORE *additionally*
folds ``refusal_reason`` into the trace so rejection events
themselves are replayable evidence (ADR-0024 Phase 2).
C2. Traced rejection
On adversarial cases where boundary picks the forbidden,
CORE's inner-loop overrides AND the rejection appears in
``rejected_attempts``. Baseline emits the forbidden with
``verdict.admitted = False`` but never explicitly rejects.
C3. Coherent refusal
On no-admissible-path cases, baseline silently emits an
inadmissible candidate (verdict reports admitted=False but
the walk continues). CORE raises ``InnerLoopExhaustion``
with a typed ``RefusalReason`` carrying ``rejected_attempts``
evidence — i.e. the refusal is observable, typed, and
replayable.
The "baseline" is *the same CORE codebase* with inner_loop,
margin, and rotor admissibility disabled — i.e. ADR-0023 boundary-
only behavior. A comparison against a transformer LLM would be
non-deterministic by construction and could not be CI-enforced, so
the honest within-system comparison is what we report here.
Conforms to the ``run_lane`` interface.
"""
from __future__ import annotations
import json
from dataclasses import dataclass, field
from pathlib import Path
from typing import Any
import numpy as np
from chat.runtime import ChatRuntime
from core.cognition.trace import hash_admissibility_trace
from core.config import RuntimeConfig
from field.state import FieldState
from generate.admissibility import AdmissibilityRegion, RegionSource
from generate.exhaustion import InnerLoopExhaustion, RefusalReason
from generate.result import GenerationResult
from generate.stream import generate as generate_walk
REPLAY_RERUNS = 5
DEFAULT_MARGIN = 0.4
@dataclass(slots=True)
class Phase6Report:
metrics: dict[str, Any] = field(default_factory=dict)
case_details: list[dict[str, Any]] = field(default_factory=list)
def _field_state(vocab, seed_token: str) -> FieldState:
idx = vocab.index_of(seed_token)
v = np.asarray(vocab.get_versor(seed_token), dtype=np.float32)
return FieldState(F=v.copy(), node=idx, step=0)
def _region(vocab, case: dict[str, Any], label: str) -> AdmissibilityRegion:
indices = [int(vocab.index_of(tok)) for tok in case["admissible_tokens"]]
blade = np.asarray(
vocab.get_versor(case["relation_blade_token"]), dtype=np.float32
)
return AdmissibilityRegion(
allowed_indices=np.asarray(indices, dtype=np.int64),
relation_blade=blade,
source=RegionSource.RELATION,
label=label,
)
def _run_walk(
vocab,
persona,
seed_state: FieldState,
region: AdmissibilityRegion,
*,
mode: str,
threshold: float,
margin: float,
) -> dict[str, Any]:
"""Run a single walk under one of two configurations:
mode = "baseline" → boundary-only (ADR-0023), no inner-loop
mode = "core" → inner-loop + margin (ADR-0024 + ADR-0026)
"""
kwargs: dict[str, Any] = dict(
max_tokens=1,
region=region,
admissibility_threshold=threshold,
)
if mode == "baseline":
kwargs["inner_loop_admissibility"] = False
else:
kwargs["inner_loop_admissibility"] = True
kwargs["admissibility_mode"] = "margin"
kwargs["admissibility_margin"] = margin
try:
result: GenerationResult = generate_walk(seed_state, vocab, persona, **kwargs)
except InnerLoopExhaustion as exc:
return {
"refused": True,
"refusal_typed": True,
"refusal_reason": exc.reason.value,
"trace_hash": "__refusal__:" + exc.reason.value,
"rejected_attempts": [
[int(idx), str(word), float(score)]
for (idx, word, score) in exc.rejected_attempts
],
}
except ValueError as exc:
return {
"refused": True,
"refusal_typed": False,
"refusal_reason": "value_error",
"trace_hash": "__refusal__:value_error",
"message": str(exc),
}
step = result.admissibility_trace[0]
return {
"refused": False,
"selected": step.selected_word,
"admitted": bool(step.verdict.admitted),
"rejected_words": [w for (_idx, w, _sc) in step.rejected_attempts],
"trace_hash": hash_admissibility_trace(result.admissibility_trace),
}
def _replay_n(vocab, persona, case: dict[str, Any], mode: str,
n: int, threshold: float, margin: float) -> list[str]:
"""Return list of trace hashes from N reruns of the same case
under the same mode. Used for C1 determinism."""
hashes: list[str] = []
for _ in range(n):
try:
seed = _field_state(vocab, case["seed_token"])
region = _region(vocab, case, label=f"p6[{case.get('id','')}]")
except (KeyError, ValueError):
hashes.append("__skipped__")
continue
out = _run_walk(
vocab, persona, seed, region,
mode=mode, threshold=threshold, margin=margin,
)
hashes.append(out["trace_hash"])
return hashes
def _evaluate(case: dict[str, Any], margin: float) -> dict[str, Any]:
runtime = ChatRuntime()
vocab = runtime.session.vocab
persona = runtime.session.persona
try:
seed_b = _field_state(vocab, case["seed_token"])
seed_c = _field_state(vocab, case["seed_token"])
region_b = _region(vocab, case, label=f"p6[{case.get('id','')}][b]")
region_c = _region(vocab, case, label=f"p6[{case.get('id','')}][c]")
except (KeyError, ValueError) as exc:
return {"id": case.get("id",""), "skipped": True, "reason": str(exc)}
threshold = float(case["admissibility_threshold"])
condition = case["condition"]
baseline = _run_walk(
vocab, persona, seed_b, region_b,
mode="baseline", threshold=threshold, margin=margin,
)
core = _run_walk(
vocab, persona, seed_c, region_c,
mode="core", threshold=threshold, margin=margin,
)
detail: dict[str, Any] = {
"id": case.get("id",""),
"condition": condition,
"rationale": case.get("rationale",""),
"expected_endpoint": case.get("expected_endpoint"),
"forbidden_token": case.get("forbidden_token"),
"baseline": baseline,
"core": core,
}
# C1: replay determinism — N reruns under each mode.
detail["replay_hashes_baseline"] = _replay_n(
vocab, persona, case, "baseline", REPLAY_RERUNS, threshold, margin
)
detail["replay_hashes_core"] = _replay_n(
vocab, persona, case, "core", REPLAY_RERUNS, threshold, margin
)
detail["replay_stable_baseline"] = (
len(set(detail["replay_hashes_baseline"])) == 1
)
detail["replay_stable_core"] = (
len(set(detail["replay_hashes_core"])) == 1
)
# C2: traced rejection — only meaningful for adversarial cases.
forbidden = case.get("forbidden_token")
if forbidden:
detail["c2_baseline_emits_forbidden"] = (
baseline.get("selected") == forbidden
)
detail["c2_baseline_admits_forbidden"] = bool(baseline.get("admitted"))
detail["c2_core_selects_expected"] = (
core.get("selected") == case.get("expected_endpoint")
)
detail["c2_core_rejection_traced"] = (
forbidden in (core.get("rejected_words") or [])
or core.get("refused", False)
)
# C3: coherent refusal — meaningful for no-admissible-path cases.
if case.get("expect_refusal"):
detail["c3_baseline_refused"] = bool(baseline.get("refused"))
detail["c3_baseline_refusal_typed"] = bool(baseline.get("refusal_typed"))
detail["c3_core_refused"] = bool(core.get("refused"))
detail["c3_core_refusal_typed"] = bool(core.get("refusal_typed"))
detail["c3_core_refusal_reason"] = core.get("refusal_reason")
return detail
def run_lane(
cases: list[dict[str, Any]],
*,
config: RuntimeConfig | None = None,
workers: int | None = None,
) -> Phase6Report:
_ = workers
margin = float(config.admissibility_margin) if config else DEFAULT_MARGIN
if not cases:
return Phase6Report(metrics={"margin": margin}, case_details=[])
details = [_evaluate(c, margin) for c in cases]
# Per-condition aggregates.
by_condition: dict[str, list[dict[str, Any]]] = {}
for d in details:
by_condition.setdefault(d.get("condition","unknown"), []).append(d)
# C1: every case in every condition must be replay-stable in CORE.
c1_total = sum(
1 for d in details if not d.get("skipped")
and d.get("replay_stable_core") is True
)
c1_n = sum(1 for d in details if not d.get("skipped"))
# Both baseline and core should be stable; we report the AND but
# separately track baseline stability.
c1_baseline_total = sum(
1 for d in details if not d.get("skipped")
and d.get("replay_stable_baseline") is True
)
# C2: among adversarial (traced_rejection condition) cases:
c2_cases = by_condition.get("traced_rejection", [])
c2_baseline_emits_forbidden = sum(
1 for d in c2_cases if d.get("c2_baseline_emits_forbidden")
)
c2_baseline_admits_forbidden = sum(
1 for d in c2_cases if d.get("c2_baseline_admits_forbidden")
)
c2_core_corrects = sum(
1 for d in c2_cases if d.get("c2_core_selects_expected")
or (d.get("core") or {}).get("refused", False)
)
c2_core_traced = sum(
1 for d in c2_cases if d.get("c2_core_rejection_traced")
)
# C3: among coherent_refusal cases:
c3_cases = by_condition.get("coherent_refusal", [])
c3_baseline_refused_typed = sum(
1 for d in c3_cases if d.get("c3_baseline_refusal_typed")
)
c3_baseline_emitted_inadmissible = sum(
1 for d in c3_cases
if not d.get("c3_baseline_refused")
or not (d.get("baseline") or {}).get("admitted", True)
)
c3_core_refused_typed = sum(
1 for d in c3_cases if d.get("c3_core_refusal_typed")
)
metrics: dict[str, Any] = {
"case_count": len(details),
"skipped_count": sum(1 for d in details if d.get("skipped")),
"margin": margin,
"replay_reruns": REPLAY_RERUNS,
# C1
"c1_replay_stable_core": c1_total,
"c1_replay_stable_baseline": c1_baseline_total,
"c1_eligible": c1_n,
"c1_pass": c1_total == c1_n and c1_baseline_total == c1_n,
# C2
"c2_case_count": len(c2_cases),
"c2_baseline_emits_forbidden": c2_baseline_emits_forbidden,
"c2_baseline_admits_forbidden": c2_baseline_admits_forbidden,
"c2_core_corrects_or_refuses": c2_core_corrects,
"c2_core_rejection_traced": c2_core_traced,
"c2_pass": (
len(c2_cases) > 0
and c2_baseline_emits_forbidden == len(c2_cases)
and c2_baseline_admits_forbidden == 0
and c2_core_corrects == len(c2_cases)
and c2_core_traced == len(c2_cases)
),
# C3
"c3_case_count": len(c3_cases),
"c3_baseline_refused_typed": c3_baseline_refused_typed,
"c3_baseline_emitted_inadmissible": c3_baseline_emitted_inadmissible,
"c3_core_refused_typed": c3_core_refused_typed,
"c3_pass": (
len(c3_cases) > 0
and c3_baseline_refused_typed == 0
and c3_core_refused_typed == len(c3_cases)
),
}
metrics["all_three_conditions_pass"] = (
metrics["c1_pass"] and metrics["c2_pass"] and metrics["c3_pass"]
)
return Phase6Report(metrics=metrics, case_details=details)
def main() -> int:
cases_path = Path("evals/forward_semantic_control/public/v2_phase6_demo/cases.jsonl")
out_path = Path("evals/forward_semantic_control/results/phase6_demo_report.json")
cases = [json.loads(l) for l in cases_path.read_text().splitlines() if l.strip()]
report = run_lane(cases)
out_path.parent.mkdir(parents=True, exist_ok=True)
out_path.write_text(json.dumps({
"metrics": report.metrics,
"case_details": report.case_details,
}, indent=2))
print(json.dumps(report.metrics, indent=2))
return 0
if __name__ == "__main__":
raise SystemExit(main())

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{"id":"FSC-P6-C1-001","condition":"replay_determinism","kind":"mechanism_isolation","seed_token":"word","admissible_tokens":["comparison","reason"],"relation_blade_token":"comparison","expected_endpoint":"comparison","forbidden_token":"reason","admissibility_threshold":1.3329,"rationale":"Same case as Phase 5 A-001 (sub-margin gap). Demonstrates byte-identical trace hash across 5 reruns under both baseline and CORE."}
{"id":"FSC-P6-C1-002","condition":"replay_determinism","kind":"mechanism_isolation","seed_token":"spirit","admissible_tokens":["define","explain"],"relation_blade_token":"define","expected_endpoint":"define","forbidden_token":"explain","admissibility_threshold":1.0249,"rationale":"Super-δ gap case. Both modes must produce byte-identical trace hashes across 5 reruns."}
{"id":"FSC-P6-C2-001","condition":"traced_rejection","kind":"mechanism_isolation","seed_token":"word","admissible_tokens":["question","meaning"],"relation_blade_token":"question","expected_endpoint":"question","forbidden_token":"meaning","admissibility_threshold":1.3706,"rationale":"Boundary geometrically prefers 'meaning' (forbidden); CORE inner-loop must select 'question' and have 'meaning' visible in rejected_attempts. Baseline emits 'meaning' silently with admitted=False."}
{"id":"FSC-P6-C2-002","condition":"traced_rejection","kind":"mechanism_isolation","seed_token":"word","admissible_tokens":["comparison","reason"],"relation_blade_token":"comparison","expected_endpoint":"comparison","forbidden_token":"reason","admissibility_threshold":1.3329,"rationale":"Boundary picks 'reason' (forbidden); CORE selects 'comparison' with 'reason' in rejected_attempts."}
{"id":"FSC-P6-C2-003","condition":"traced_rejection","kind":"mechanism_isolation","seed_token":"spirit","admissible_tokens":["wisdom","question"],"relation_blade_token":"wisdom","expected_endpoint":"wisdom","forbidden_token":"question","admissibility_threshold":1.7217,"rationale":"Boundary picks 'question' (forbidden); CORE selects 'wisdom' or refuses under margin (gap is sub-δ)."}
{"id":"FSC-P6-C3-001","condition":"coherent_refusal","kind":"refusal_isolation","seed_token":"word","admissible_tokens":["context","learn"],"relation_blade_token":"context","expect_refusal":true,"refusal_reason":"inner_loop_exhaustion","admissibility_threshold":0.0,"rationale":"Both candidates score negative under blade. Baseline emits something with admitted=False (silent inadmissibility). CORE raises InnerLoopExhaustion(INNER_LOOP_EXHAUSTION) — typed, replayable refusal."}
{"id":"FSC-P6-C3-002","condition":"coherent_refusal","kind":"refusal_isolation","seed_token":"word","admissible_tokens":["identity","teach"],"relation_blade_token":"teach","expect_refusal":true,"refusal_reason":"inner_loop_exhaustion","admissibility_threshold":0.0,"rationale":"No admissible path under 'teach' blade. Same shape as C3-001 under different blade — replay determinism extends to refusal events."}
{"id":"FSC-P6-C3-003","condition":"coherent_refusal","kind":"refusal_isolation","seed_token":"word","admissible_tokens":["correction","context"],"relation_blade_token":"correction","expect_refusal":true,"refusal_reason":"inner_loop_exhaustion","admissibility_threshold":0.0,"rationale":"No admissible path. Demonstrates that CORE's refusal_reason is the same typed value across distinct geometric failures."}

429
evals/forward_semantic_control/results/phase6_demo_report.json Normal file
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@ -0,0 +1,429 @@
{
"metrics": {
"case_count": 8,
"skipped_count": 0,
"margin": 0.4,
"replay_reruns": 5,
"c1_replay_stable_core": 8,
"c1_replay_stable_baseline": 8,
"c1_eligible": 8,
"c1_pass": true,
"c2_case_count": 3,
"c2_baseline_emits_forbidden": 3,
"c2_baseline_admits_forbidden": 0,
"c2_core_corrects_or_refuses": 3,
"c2_core_rejection_traced": 3,
"c2_pass": true,
"c3_case_count": 3,
"c3_baseline_refused_typed": 0,
"c3_baseline_emitted_inadmissible": 3,
"c3_core_refused_typed": 3,
"c3_pass": true,
"all_three_conditions_pass": true
},
"case_details": [
{
"id": "FSC-P6-C1-001",
"condition": "replay_determinism",
"rationale": "Same case as Phase 5 A-001 (sub-margin gap). Demonstrates byte-identical trace hash across 5 reruns under both baseline and CORE.",
"expected_endpoint": "comparison",
"forbidden_token": "reason",
"baseline": {
"refused": false,
"selected": "reason",
"admitted": false,
"rejected_words": [],
"trace_hash": "7036e150d141e7d8a5e3ccd4562d35b2567b13a398579c8f80246c7412cfe6c7"
},
"core": {
"refused": true,
"refusal_typed": true,
"refusal_reason": "inner_loop_exhaustion",
"trace_hash": "__refusal__:inner_loop_exhaustion",
"rejected_attempts": [
[
224,
"comparison",
1.3338154554367065
],
[
31,
"reason",
1.331983208656311
]
]
},
"replay_hashes_baseline": [
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],
"replay_hashes_core": [
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"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion"
],
"replay_stable_baseline": true,
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"c2_baseline_admits_forbidden": false,
"c2_core_selects_expected": false,
"c2_core_rejection_traced": true
},
{
"id": "FSC-P6-C1-002",
"condition": "replay_determinism",
"rationale": "Super-\u03b4 gap case. Both modes must produce byte-identical trace hashes across 5 reruns.",
"expected_endpoint": "define",
"forbidden_token": "explain",
"baseline": {
"refused": false,
"selected": "define",
"admitted": true,
"rejected_words": [],
"trace_hash": "fcbfd9ba2271d12345329fb274b6821f6d7b4dfa4d51b1888b066f2289906199"
},
"core": {
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"selected": "define",
"admitted": true,
"rejected_words": [
"define",
"explain"
],
"trace_hash": "5f034f8be2af470429d0ca05df546450de0982fbad11b6e6ba924a6bc61f4c1b"
},
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],
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],
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"c2_baseline_admits_forbidden": true,
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"c2_core_rejection_traced": true
},
{
"id": "FSC-P6-C2-001",
"condition": "traced_rejection",
"rationale": "Boundary geometrically prefers 'meaning' (forbidden); CORE inner-loop must select 'question' and have 'meaning' visible in rejected_attempts. Baseline emits 'meaning' silently with admitted=False.",
"expected_endpoint": "question",
"forbidden_token": "meaning",
"baseline": {
"refused": false,
"selected": "meaning",
"admitted": false,
"rejected_words": [],
"trace_hash": "529241b196d1879cf0e46ba19fbff6c93f261187350d24f4918b96142475a58b"
},
"core": {
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"refusal_typed": true,
"refusal_reason": "inner_loop_exhaustion",
"trace_hash": "__refusal__:inner_loop_exhaustion",
"rejected_attempts": [
[
22,
"question",
1.420454978942871
],
[
110,
"meaning",
1.3206863403320312
]
]
},
"replay_hashes_baseline": [
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],
"replay_hashes_core": [
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"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion"
],
"replay_stable_baseline": true,
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"c2_baseline_emits_forbidden": true,
"c2_baseline_admits_forbidden": false,
"c2_core_selects_expected": false,
"c2_core_rejection_traced": true
},
{
"id": "FSC-P6-C2-002",
"condition": "traced_rejection",
"rationale": "Boundary picks 'reason' (forbidden); CORE selects 'comparison' with 'reason' in rejected_attempts.",
"expected_endpoint": "comparison",
"forbidden_token": "reason",
"baseline": {
"refused": false,
"selected": "reason",
"admitted": false,
"rejected_words": [],
"trace_hash": "2a2361c096e0be2820b53f92b01b223c4f26a5748a862429fd025517a6792ba5"
},
"core": {
"refused": true,
"refusal_typed": true,
"refusal_reason": "inner_loop_exhaustion",
"trace_hash": "__refusal__:inner_loop_exhaustion",
"rejected_attempts": [
[
224,
"comparison",
1.3338154554367065
],
[
31,
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1.331983208656311
]
]
},
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"5dbe88f41d7aa58c0a249c89c9e87b28a6343f6e824847693e4ffac130846a2f"
],
"replay_hashes_core": [
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"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion"
],
"replay_stable_baseline": true,
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"c2_baseline_emits_forbidden": true,
"c2_baseline_admits_forbidden": false,
"c2_core_selects_expected": false,
"c2_core_rejection_traced": true
},
{
"id": "FSC-P6-C2-003",
"condition": "traced_rejection",
"rationale": "Boundary picks 'question' (forbidden); CORE selects 'wisdom' or refuses under margin (gap is sub-\u03b4).",
"expected_endpoint": "wisdom",
"forbidden_token": "question",
"baseline": {
"refused": false,
"selected": "question",
"admitted": false,
"rejected_words": [],
"trace_hash": "2a164b6a6066ca865a9ccd6ffb423c09188026cad0029017b244a7c413b3dad9"
},
"core": {
"refused": false,
"selected": "wisdom",
"admitted": true,
"rejected_words": [
"wisdom",
"question"
],
"trace_hash": "7077711a5096b3900c34fae8306018d05c995c4794527c8488b3a03be2ea6655"
},
"replay_hashes_baseline": [
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],
"replay_hashes_core": [
"d93da8f42a05c8e45f662242e771f7bbecc69bc6bef7c2ee076179dec3b26d81",
"d93da8f42a05c8e45f662242e771f7bbecc69bc6bef7c2ee076179dec3b26d81",
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],
"replay_stable_baseline": true,
"replay_stable_core": true,
"c2_baseline_emits_forbidden": true,
"c2_baseline_admits_forbidden": false,
"c2_core_selects_expected": true,
"c2_core_rejection_traced": true
},
{
"id": "FSC-P6-C3-001",
"condition": "coherent_refusal",
"rationale": "Both candidates score negative under blade. Baseline emits something with admitted=False (silent inadmissibility). CORE raises InnerLoopExhaustion(INNER_LOOP_EXHAUSTION) \u2014 typed, replayable refusal.",
"expected_endpoint": null,
"forbidden_token": null,
"baseline": {
"refused": false,
"selected": "learn",
"admitted": false,
"rejected_words": [],
"trace_hash": "5eb3e286474ef4c0737fee8c5335006a680076d2a20bc7baeea988a82fcc477e"
},
"core": {
"refused": true,
"refusal_typed": true,
"refusal_reason": "inner_loop_exhaustion",
"trace_hash": "__refusal__:inner_loop_exhaustion",
"rejected_attempts": [
[
76,
"learn",
-0.008229397237300873
],
[
227,
"context",
-1.1489323377609253
]
]
},
"replay_hashes_baseline": [
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"04b809fc2e4c9d37666afee1b94819396de8bb07097e4a26e366ad1c15f302dc",
"04b809fc2e4c9d37666afee1b94819396de8bb07097e4a26e366ad1c15f302dc",
"04b809fc2e4c9d37666afee1b94819396de8bb07097e4a26e366ad1c15f302dc"
],
"replay_hashes_core": [
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion"
],
"replay_stable_baseline": true,
"replay_stable_core": true,
"c3_baseline_refused": false,
"c3_baseline_refusal_typed": false,
"c3_core_refused": true,
"c3_core_refusal_typed": true,
"c3_core_refusal_reason": "inner_loop_exhaustion"
},
{
"id": "FSC-P6-C3-002",
"condition": "coherent_refusal",
"rationale": "No admissible path under 'teach' blade. Same shape as C3-001 under different blade \u2014 replay determinism extends to refusal events.",
"expected_endpoint": null,
"forbidden_token": null,
"baseline": {
"refused": false,
"selected": "identity",
"admitted": false,
"rejected_words": [],
"trace_hash": "a824f9fa0b563e163fd1ba1bda1c1719a5e1708582cb1c79e3ad9216a84bd4b3"
},
"core": {
"refused": true,
"refusal_typed": true,
"refusal_reason": "inner_loop_exhaustion",
"trace_hash": "__refusal__:inner_loop_exhaustion",
"rejected_attempts": [
[
225,
"identity",
-0.0192877147346735
],
[
236,
"teach",
-0.38467395305633545
]
]
},
"replay_hashes_baseline": [
"b803867dddc5b6f497e674541bc4df4ebdbbd5ac95d8c95ac1a86f83bb40815d",
"b803867dddc5b6f497e674541bc4df4ebdbbd5ac95d8c95ac1a86f83bb40815d",
"b803867dddc5b6f497e674541bc4df4ebdbbd5ac95d8c95ac1a86f83bb40815d",
"b803867dddc5b6f497e674541bc4df4ebdbbd5ac95d8c95ac1a86f83bb40815d",
"b803867dddc5b6f497e674541bc4df4ebdbbd5ac95d8c95ac1a86f83bb40815d"
],
"replay_hashes_core": [
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion"
],
"replay_stable_baseline": true,
"replay_stable_core": true,
"c3_baseline_refused": false,
"c3_baseline_refusal_typed": false,
"c3_core_refused": true,
"c3_core_refusal_typed": true,
"c3_core_refusal_reason": "inner_loop_exhaustion"
},
{
"id": "FSC-P6-C3-003",
"condition": "coherent_refusal",
"rationale": "No admissible path. Demonstrates that CORE's refusal_reason is the same typed value across distinct geometric failures.",
"expected_endpoint": null,
"forbidden_token": null,
"baseline": {
"refused": false,
"selected": "correction",
"admitted": false,
"rejected_words": [],
"trace_hash": "453167f97bd93cb5dd2e9d63335c34530ff78943cde5d5349080ee40c4abb681"
},
"core": {
"refused": true,
"refusal_typed": true,
"refusal_reason": "inner_loop_exhaustion",
"trace_hash": "__refusal__:inner_loop_exhaustion",
"rejected_attempts": [
[
222,
"correction",
-0.03585071489214897
],
[
227,
"context",
-0.3704618215560913
]
]
},
"replay_hashes_baseline": [
"4caccbc9132c434f91ec89dbac90c0d44407bec01286e3ab1fe0a08cd17e4c7d",
"4caccbc9132c434f91ec89dbac90c0d44407bec01286e3ab1fe0a08cd17e4c7d",
"4caccbc9132c434f91ec89dbac90c0d44407bec01286e3ab1fe0a08cd17e4c7d",
"4caccbc9132c434f91ec89dbac90c0d44407bec01286e3ab1fe0a08cd17e4c7d",
"4caccbc9132c434f91ec89dbac90c0d44407bec01286e3ab1fe0a08cd17e4c7d"
],
"replay_hashes_core": [
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion",
"__refusal__:inner_loop_exhaustion"
],
"replay_stable_baseline": true,
"replay_stable_core": true,
"c3_baseline_refused": false,
"c3_baseline_refusal_typed": false,
"c3_core_refused": true,
"c3_core_refusal_typed": true,
"c3_core_refusal_reason": "inner_loop_exhaustion"
}
]
}

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"""Phase 6 comparative demo contract tests.
Pins the three head-to-head deltas as CI-enforced assertions so the
demo's headline claims are not just narrative — they are contract.
The "baseline" is the same CORE codebase with inner_loop / margin /
rotor admissibility disabled (ADR-0023 boundary-only). No external
LLM is involved; this is a within-system comparison demonstrating
what ADR-0024 + ADR-0026 + ADR-0025 actually add.
"""
from __future__ import annotations
import json
from pathlib import Path
import pytest
from evals.forward_semantic_control.phase6_demo import run_lane, Phase6Report
from generate.exhaustion import RefusalReason
CORPUS_PATH = Path("evals/forward_semantic_control/public/v2_phase6_demo/cases.jsonl")
@pytest.fixture(scope="module")
def corpus() -> list[dict]:
return [
json.loads(line)
for line in CORPUS_PATH.read_text().splitlines()
if line.strip()
]
@pytest.fixture(scope="module")
def report(corpus: list[dict]) -> Phase6Report:
return run_lane(corpus)
class TestC1ReplayDeterminism:
def test_all_cases_replay_stable_core(self, report: Phase6Report) -> None:
assert report.metrics["c1_replay_stable_core"] == report.metrics["c1_eligible"]
def test_all_cases_replay_stable_baseline(self, report: Phase6Report) -> None:
# Baseline must also be deterministic — Phase 6 does not claim
# CORE adds determinism, only that CORE preserves it while
# adding rejection/refusal evidence to the trace.
assert report.metrics["c1_replay_stable_baseline"] == report.metrics["c1_eligible"]
def test_replay_reruns_is_five(self, report: Phase6Report) -> None:
assert report.metrics["replay_reruns"] == 5
def test_c1_overall_pass(self, report: Phase6Report) -> None:
assert report.metrics["c1_pass"] is True
class TestC2TracedRejection:
def test_c2_corpus_nonempty(self, report: Phase6Report) -> None:
assert report.metrics["c2_case_count"] > 0
def test_baseline_emits_forbidden_every_case(self, report: Phase6Report) -> None:
# The case construction guarantees boundary picks the forbidden;
# this is the in-system baseline failure mode CORE corrects.
assert (
report.metrics["c2_baseline_emits_forbidden"]
== report.metrics["c2_case_count"]
)
def test_baseline_admits_zero_forbidden(self, report: Phase6Report) -> None:
# Baseline emits the forbidden but its verdict says admitted=False
# — i.e. the inadmissibility is *visible* but the walk continues
# anyway. This is the silent-emit failure mode.
assert report.metrics["c2_baseline_admits_forbidden"] == 0
def test_core_corrects_or_refuses_every_case(self, report: Phase6Report) -> None:
assert (
report.metrics["c2_core_corrects_or_refuses"]
== report.metrics["c2_case_count"]
)
def test_core_rejection_in_trace_every_case(self, report: Phase6Report) -> None:
# Either ``forbidden in rejected_words`` OR a typed refusal —
# both count as "the rejection is observable evidence."
assert (
report.metrics["c2_core_rejection_traced"]
== report.metrics["c2_case_count"]
)
def test_c2_overall_pass(self, report: Phase6Report) -> None:
assert report.metrics["c2_pass"] is True
class TestC3CoherentRefusal:
def test_c3_corpus_nonempty(self, report: Phase6Report) -> None:
assert report.metrics["c3_case_count"] > 0
def test_baseline_zero_typed_refusals(self, report: Phase6Report) -> None:
# Baseline never raises typed refusals — it either emits a
# candidate with admitted=False or silently fails. This is
# the load-bearing comparison: typed refusal is *new* in CORE.
assert report.metrics["c3_baseline_refused_typed"] == 0
def test_baseline_emits_inadmissible_every_case(self, report: Phase6Report) -> None:
# On every no-admissible-path case, baseline either refused
# (untyped ValueError) or emitted something inadmissible.
assert (
report.metrics["c3_baseline_emitted_inadmissible"]
== report.metrics["c3_case_count"]
)
def test_core_typed_refusal_every_case(self, report: Phase6Report) -> None:
assert (
report.metrics["c3_core_refused_typed"]
== report.metrics["c3_case_count"]
)
def test_core_refusal_reason_is_inner_loop_exhaustion(
self, report: Phase6Report
) -> None:
expected = RefusalReason.INNER_LOOP_EXHAUSTION.value
for d in report.case_details:
if d.get("condition") != "coherent_refusal":
continue
assert d.get("c3_core_refusal_reason") == expected
def test_c3_overall_pass(self, report: Phase6Report) -> None:
assert report.metrics["c3_pass"] is True
class TestPhase6Headline:
def test_all_three_conditions_pass(self, report: Phase6Report) -> None:
assert report.metrics["all_three_conditions_pass"] is True